Very useful extension, thanks for it! I have only one problem with it: in Facebook Messenger there are a usual problem (not always but many times) that if I insert a Clipping into the conversation, the messenger window disappears totally. It shows again only if I refresh the Facebook page (with F5 key). The Facebook search field works well to insert the Clipping so I used to copy via that but it's not so comfortable.
Windows 10 Pro, Firefox 84.0.2 (and sooner versions).